Honda 2002 Accord Manual page 1370

Keyless Entry/Security Alarm System
Control Unit Input Test (cont'd)
13. Reconnect the connectors to the door multiplex control unit, make these input tests at the connector.
• If any test indicates a problem, find and correct the cause, then recheck the system.
• If all the input tests prove OK, go to step 14.
Cavity Wire
Test condition
Test: Desired result
Possible cause if result is not obtained
A6 BLU/WHT
Driver's door key
cylinder switch in
LOCK
Check for voltage to ground:
There should be less than 1 V.
• Faulty driver's door key cylinder
switch
• Poor ground(G401)
• An open in the wire
A6 BLU/WHT
Driver's door key
cylinder switch in
neutral
Check for voltage to ground:
There should be 5 V or more.
• Faulty driver's door key cylinder
switch
• Poor ground(G401)
• An open in the wire
A16 BLU
Driver's door key
cylinder switch in
UNLOCK
Check for voltage to ground:
There should be less than 1 V.
• Faulty driver's door key cylinder
switch
• Poor ground(G401)
• An open in the wire
A16 BLU
Driver's door key
cylinder switch in
neutral
Check for voltage to ground:
There should be 5 V or more.
• Faulty driver's door key cylinder
switch
• Poor ground(G401)
• An open in the wire
A7 PNK
Driver's door lock
knob locked
Check for voltage to ground:
There should be less than 1 V.
• Faulty driver's door lock
actuator
• Poor ground(G401)
• An open in the wire
A7 PNK
Driver's door lock
knob unlocked
Check for voltage to ground:
There should be 5 V or more.
• Faulty driver's door lock
actuator
• Poor ground(G401)
• An open in the wire
A17 BLK/RED
Driver's door lock
knob unlocked
Check for voltage to ground:
There should be less than 1 V.
• Faulty driver's door lock
actuator
• Poor ground(G401)
• An open in the wire
A17 BLK/RED
Driver's door lock
knob locked
Check for voltage to ground:
There should be 5 V or more.
• Faulty driver's door lock
actuator
• Poor ground(G401)
• An open in the wire
A8
BLK/WHT Driver's door lock
switch in LOCK
Check for voltage to ground:
There should be less than 1 V.
• Faulty driver's door lock switch
• Poor ground (G401)
• An open in the wire
A8
BLK/WHT
Driver's door lock
switch in neutral
Check for voltage to ground:
There should be 5 V or more.
• Faulty driver's door lock switch
• Poor ground (G401)
• An open in the wire
A18 GRN/RED Driver's door lock
switch in LOCK
Check for voltage to ground:
There should be less than 1 V.
• Faulty driver's door lock switch
• Poor ground (G401)
• An open in the wire
A18 GRN/RED
Driver's door lock
switch in neutral
Check for voltage to ground:
There should be 5 V or more.
• Faulty driver's door lock switch
• Poor ground (G401)
• An open in the wire
14. If all the input tests prove OK, one of the control units must be faulty. Substitute a known-good control unit for the
one that is most likely at fault, then recheck the system. If the system works properly, the original control unit is
faulty; replace it. If there is still a malfunction, substitute a known-good control unit for the next most likely unit to
be at fault, and recheck. If the system works properly, the original unit is faulty; replace it.
22-224